title: [Circulating DNA, telomerase of circulating tumor cells and early diagnosis of tumors].
mesh_terms: D004247:DNA / Q000097:blood*; D006801:Humans; D009369:Neoplasms / Q000175:diagnosis*; D009360:Neoplastic Cells, Circulating / Q000737:chemistry*; D019098:Telomerase / Q000032:analysis*
chemical_list: D004247:DNA; D019098:Telomerase